(3EOGQI GdeSJbHd (B: (3GdJQJjHGJ GdBSjhjI aj GdfXGe GdYGdej GdLOjO (B/ s - (3WdYJ, YHOGdefYes ((3GdbGgQI (B:s, 1998)
Keywords: (3GdJGQjN GdSjGSjs; (3GdfXGe GdYGdej GdLOjOs; (3JGQjN BSjGs